potter



(No Model.)

s. POTTER & D. J. OARTWRIGHT.

ELECTRIC WIRE INSULATING CLEAT.

No. 444,317. Patented Jan. 6, 1-891.

ME TO fl a'ii/ Wl-rHBSSES UNITED STATES JOHN S. POTTER, OF NEIVTON, AND

PATENT OFFICE.

DAvID J. c nnrwnieirr, or nosToN,

ELECTRIC-WIRE lNSULATlNG-CLEAT.

SPECIFICATION forming part of Letters Patent No. 444,317, dated January6, 1891.

Application filed August 16, 1890. Serial No. 362,187. (No model.)

T to whom may GOIZCCITL.

Be it known that we, JOHN S. POTTER, a citizen of the United States, anda resident of Newton, in the county of Middlesex and State ofMassachusetts, and DAVID J. CARTWRIGHT, a citizen of the United States,and a resident of Boston, in the county of Suffolk and State ofMassachusetts, have jointly invented new and useful Improvements iniring Insulat- Io ing Cleats, of which the following, taken inconnection with the accompanying drawings, is a specification.

This invention relates to improvements in wiring insulating-cleats forthe purpose of suspending and holding electrical wires in place onceilings or walls, and it is carried out as follows, reference being hadto the accompanying drawings, wherein Figure 1 represents a top view ofthe in1- proved cleat. Fig. 2 represents abottom view of it. Fig. 3represents a side view of the same, and Fig. l; represents a section onthe line X X shown in Fig. 3.

Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawings.

A in the figures, represents the improved cleat, which is made ofinsulating material, preferably of porcelain.

A A are vertical perforations in the cleat for the purpose of receivingthe fasteningsorews l3 B, by means of. which the clcat is secured to theceiling or wall.

A A are elevated or raised bearing-sur- 5 faces on the upper side of thecleat, through which the perforations A A. pass, which bearing-surfacesare made on the cleat for the purpose of transferring theholding-pressure of the said fasteningscrews to the places 1,0 wheresuch screws pass through the cleat, and thus preventing the breakage ofthe latter, particularly if secured to uneven walls or ceilings, posts,the.

At right angles to the screw-receiving per 5 forations A A we maketransverse perforations a a a, through which the electric wires 0 areinserted and held and supported at proper distances from each other, asshown in Fig. i. The said wire-holding perforations are made taperingfrom end to end, as shown in Fig. 4,, and this is done for the purposeof temporarily securing the wires to the successive cleats while suchwires are being strung. Such temporary securing of the wire to the cleatis accomplished by means of a tapering 5 5 wedge D, preferably made ofwood and driven into the larger end of the tapering hole a,

so as to clamp or bind the wire within such tapering hole until the wirehas been inserted through the next eleat in the series stretched andtemporarily secured in place when the wedge in the first cleat isremoved, and so on until the whole of the line-wires are passed throughthe cleats.

I'Iaving thus fully described the nature, eoustruction, and operation ofour invention, we wish to secure by Letters Patent, and claim- 1. Aninsulating wiring-cleat formed integral on its upper surface with theelevated bearing-surfaces A, and provided with the perforations A,extending through said elevated beariiw-surfaces, and with taperingwire-retaining perforations a, against the walls of which the wires areadapted to be wedged by suitable wedges, substantially as 7 5 described.

2. An insulating wiring-cleat for electric wires, having the elevated orraised bearingsurfaces on its upper side, and perforations passingthrough the cleat and such bearingsurfaces for the reception offastening-screws for the purpose of clamping the cleat against suchbearing-surfaces only, substantially as specified.

3. The improved insulating wiring-cleat having the elevated or raisedbearing-surfaces on its upper side and perforations going through thecleat and such bearing-surfaces, combined with transverse taperingwire-retaining perforations extending at right angles to theperforations which extend through the bearing-surfaces, substantially asand for the purpose set forth.

4. The improved insulating wiring-cleats having tapering wire-retainingperforations two subscribing witnesses, on this 4th day of and wirespassingthroughthe san1e,e0mbined August, A. D. 1890.

with wedges for securing said wires tempo- 1 rarily against the walls ofsaid tapering pergX ii 5 forations, substantially in a manner asspecifled. Witnesses:

In testimony whereof We have signed our ALBAN ANDRE'lN,

names to this specification, in the presence of ALICE A. PERKINS.

